Speco Technologies PAT-20TB talk-back DC mobile amplifier delivers an amplified sound system on the go for any motor vehicle and/or nautical application. Our convenient talk-back control button allows the broadcaster two-way communication by transforming their normal external speakers or P.A. horns into remote microphones. The PAT-20TB ensures clear and consistent communication with any audience. Individual volume and tone controls enables the user to customize the unit settings to their preference and a rear auxiliary input allows adaptable sound sources. Complete with a plug-in cigarette lighter adapter, which will quickly supply DC power, the PAT-20TB is a total mobile communication solution that delivers the reliability and unique features that our customers have come to expect from Speco Technologies.